Transparent tile?

is it possible to skin a tile so that its clear see through and if so how would I do it?

I read lil blu smurfs tut but that didnt help its just that it is necessary for a map idea im working on

Like this? http://wc3campaigns.net/showthread.php?t=80916

Then yes, it is. You can download the actual alpha file here.

thanks that should work!!